399308311447 has 8 divisors (see below), whose sum is σ = 401002110720. Its totient is φ = 397614704760.

The previous prime is 399308311403. The next prime is 399308311471. The reversal of 399308311447 is 744113803993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399308311447 - 2⁷ = 399308311319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399308311394 and 399308311403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399308711447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5415208 + ... + 5488450.

It is an arithmetic number, because the mean of its divisors is an integer number (50125263840).

Almost surely, 2^399308311447 is an apocalyptic number.

399308311447 is a deficient number, since it is larger than the sum of its proper divisors (1693799273).

399308311447 is a wasteful number, since it uses less digits than its factorization.

399308311447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96293.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 399308311447 in words is "three hundred ninety-nine billion, three hundred eight million, three hundred eleven thousand, four hundred forty-seven".